Vacuum cleaner



' p 1953 R. c LAMPE 2,635,708

VACUUM CLEANER Filed June 29, 1948 4 Sheets-Sheet 1 INVENTOR. ROBERT C.LAMPE MW A Arrozzzvim R. C. LAMPE VACUUM CLEANER 4 Sheets-Sheet 2 April21, 1953 Filed June 29, 1948 wm mm mm INVENTOR. ROBERT C: LAMPE S N m T.

April 1953 R. c. LAMPE 2,635,708

' VACUUM CLEANER Filed June 29, 1948 4 She'ets-Sheet 3 IN VEN TOR.ROBERT C. LAMPE BY A W E Arron ns.

p zl, 1953 a c. AMPE 2,ss5;7os

VACUUM CLEANER Filed June 29, 1-948 4 Sheets-Sheet 4 INVENTOR. ROBERT CLAMPE 7 ATTORN Patented Apr. 21, 1953 UNITED STATES PATENT OFFICE2,635,708 VACUUM CLEANER Robert C. Lam'pe, Stamford, 'Conn-.,'"assi'g'nor to Electrolux Corporation, Old Greenwich, Go'nn., acorporation of Delaware Application .iunezs, 1948, Serial No.'35,845

7 Claims.

, 1 This invention relates to suction cleaners and is .particual'rlyconcerned with portable selfcontained units including a motor fanassembly and a dust "separating mechanism. the device being particularlydesigned for domestic use.

It is to 'be understood that the device here presented is designed foruse with a hose (not illustrated) to which may be selectively appliedvarious cleaning tools through which dust-laden air is drawn from thesurface'being cleaned, the "hose being removablyapplied to the presentdevice to deliversuch air to the'dust separating and collecti'n'greceptacle Where entrained dust, dirt and foreign matterfis separatedand retained while clean and purified air is discharged.

One of the cbjectso'f 'my invention is to provide in combination "with avacuum cleaner, a hose couplin so 'mounted'with respect to the housingof the cleaner that when the coupling is moved with respect to thehousing in order to permit insertion or removal of -'a dust collectingreceptacl'e, the axis of the coupling remains substantially parallel toitself. This has the advantage that, inasmuch as a hose 'conne'ctedftothe coupling does not have to be bent or twisted, the hose offers aminimum resistance to movement of the coupling. 'In addition, thecoupling is always maintained in proper alignment so that the hose maybeconnected readily thereto.

Another object is to provide in combination with-a cover'mem'b'er, meansfor moving the dust collecting receptacle to a position for readyremoval from the housing as an incident to the movementof the cover. r e

Numerous other objects and features of the invention will becomeapparent from the following detailed descriptionof the illustrativeembodiment herein presented and shown in the accompanying drawings,which form a part of this specification, and of which;

Fig. l is a side elevation of a vacuum cleaner in accordance with --myinvention showing the cover in partially opened position and with thereceptacle withdrawn;

Fig. 2 is a similar view showing the cover in fullyopened position;

Fig. 3 is a top view of a frontcovershown in Figs. land-2;

Fig. 4 is a longitudinal vertical section taken on theline,44 of Fig. 5;I r

Fi 5 is a-horizo-ntal sectional view of the vacuum cleaner shown in Fig.4;

Fig. "6 is-a transverse vertical section takenon the line 6-.6 of Fig.1'; I

Fig. '1 is anisoinetric 'ie'w whens-a of a housing structure; "and Fig.8 is an isometric view of the f'ront bracket.

It will be apparent from the following detaile'c'i discussion ofstructural features how the objects 'hereinbefore stated areaccomplished.

The base l3 of the structure is a shallow dish like member, preferablyof aluminum or mafgn'esium die casting, and issubstantially rectangularin horizontal cross-section, being provided, slightly to the rear of"the transverse center line, with wheel wells 10 which are centrallyapeftured at I l to receive the'axle's of the su portin wheels [2. Atthe forward end of the casting there is provided a recess 13 for'thereception of a front caster M, the shaft I5 of which extends upwardlythrough anapertured boss T6. The bottom of the casting forwardly ofthewheel wells lll'i's provided with a pair "of depressions l7 and I8. Theleft-hand depression I! is relatively wide, its width permitting thereception therein 6f the lower edge of the fan "housing I24 of the motorfan unit I20, as shown in Fig. 6, while 'the'righthand depression H3is'narrower. Each depression is fitted on'the bottom exterior of thecasting with runner surfaces l9 which extend forwardly up the front ofthe casting and are arranged "to act as sleighs in the movement of thedevice over obstructions in the .path of travel. Rearwardly 'of thewheelwells there is a central depression 20 also provided with a runnerstrip 2| which prevents tipping over of the machine when a lifting forceis exerted thereon by the hose as a result of moving the device by a tugon the hose.

The casting is also provided with a pair of oppositely dispcsedforwardly positioned bosses 23 which-are internally threaded for thereception of securing screws for a front member For mounting the motorfan unit on the base B there are provided a forward pair of threadedbosses "24 and aniintermediate-pair of threaded bosses 25 towhicharebolted brackets of the motor fan unit, as will be hereinafter described.Slightly to the rear of the bosses 25 there is also provided a pair ofthreaded bosses 26 which are adapted to support the front portion of acord reel W. Rearwardly of the bosses '26 there is a pair of bosses "21arranged for supporting the rear portion of the cord reel. The castingalso includes a hollow projection 28 forming an open recess at the rearof the base B for the reception of the conductor plug 29 at the end ofthe conductor when the latter is wound upon the cord reel. The outer endof the recess is of sufiicient diameter to permit'thepassagetherethrough of the plug, while the inner end of the recess is onlylarge enough t'c perrliit the free passage of the conductor, but

not the 'plu g.

Ihe casting also includes a rear outlet box 30 which extends upwardlybeyond the normal plane of the top surface of the base, the rear upperextension 3| being provided with an air outlet aperture 32, while theleft side wall 33 is provided with an air inlet aperture 34. Thearrangement is such that air from the motor fan unit passes into the box30 by way of the aperture 34 and is exhausted therefrom through theaperture 32. The aperture 32 is provided with a louvered pivotallymounted air discharge door 35 (Fig. 4) the louvers of which direct theair upwardly away from the floor, while the pivotal mounting thereofwardly projecting cars 48 which are apertured to be secured by suitablefastening means to the bosses 23 of the base. Member F stands verticallyupright on the base casting B and is provided with a lower wide frontsection which corresponds to the top outline of the front portion of thebase B, the central portion, however, being cut away to form a recess 4|into which the supporting arms of a cover C fit when the cover isclosed. Above the recess 41 the member F is further inwardly recessed toform a horizontal platform, beyond which the member F extends verticallyupward to form a ring 43 which has a radially inwardly extending flange44 within which is seated the receptacle compartment hereinafterdescribed. Oppositely disposed portions of the ring 43 are cut away asat 45 to provide for the reception of the extractor fingers of the coverC hereinafter described. The rear wall of the recess Al is also cut awayas at 41 to form an aperture therethrough for the accommodation of afront latching finger 48 also to be hereinafter described.

A top housing member T is supported from the base B by engagement with apacking and bumper ring R at its lower edge and is also in engagementwith the front member F and constitutes an open fronted body,substantially U- shaped in inverted cross-section and is provided withapertures 50, 50a, 5| and 52 to permit extension therethrough of a frontcover operating rod I18, the cord reel control lever 53, the motorswitch pedal 90 and the handle 58, respectively. The control lever 53 ispivotally mounted on the top '1' as at 54 and is connected by means ofthe curved rod 53a with the cord rewind lever 55. The cover C hassecured thereto a decorative strip 51 which may be formed of polishedmetal or other contrasting material, and which is in alignment with thehandle 58 and with a similar decorative piece 59 forwardly of the handleand a decorative piece 56 to the rear of the handle. The piece 56 is notonly decorative, but also serves to prevent marring and scratching ofthe surface of the top T by the operators foot if the latter is used toactuate the lever 53 or the pedal 90.

The cover C is of hollow construction as shown in Fig. 4, beingapertured in front to receive a hose connection member 50 to which isattached an inlet tube 65 which, when the cover is closed, is insertedthrough a stiff front end I I l of a dust receptacle H0 as hereinafterexp ained- Th 4 cover C is supported by an outer plate 65 and an innerplate 61. The plates 66 and 61 fit Within the recess 4| of the frontbracket F when the cover is closed. The lower end of plate 65 is pivotedto the casting F at '58, while its upper end is pivoted to the member Cat 69. Similarly, the lower end of the inner plate 61 is pivoted to thecasting F at 10 and its upper end is pivoted to the cover C. A coilspring 12 is mounted about the lower pintle for the inner plate 5! andextends between the casting and the plate to urge the plate and with itthe cover C and the outer plate 68 normally to the fully extended outerposition shown in Fig. 2. When the device is in operation the parts areretained in the closed position shown in Fig. 4 by the latch member 48which extends through the aperture M of the casting F, through aregistering opening in the inner plate 51, and is'pivotally mounted asat T6 to the casting. A spring 11 is arranged to normally hold the latchin clockwise rotated position and in engagement with the plate 6'1. Anoperating rod 18, which may be actuated either automatically or by handas will hereinafter be described, engages the lower leg of the latch 43through a lost motion connection indicated at '59.

With respect to this construction it will be noted that when the plate61 is released by actuation of the latch 48 the plates 56 and 61 willmove clockwise on their pivots 68 and 10, but will move in substantiallyparallel fashion to carry with them the cover C in an outwardly anddownwardly directed arcuate path, as indicated in Figs. 1 and 2, thehose connector 60 thus remaining horizontal in all positions of thecover.

Extending inwardly from two sides of the cover C, as shown in Figs. 1, 2and 3, there is provided a pair of hooked extractor fingers 80, theinner ends of which are formed with inclined surfaces a terminating inabrupt shoulders 80b. The inclined surfaces 80a enable the inner ends ofthe fingers to be sprung past the stiff front end Hi of the dustreceptacle H0 during inward movement of the cover, the ends beingreceived within the recesses 45 of the casting F. Upon outward movementof the cover C, the shoulders 80b of fingers 80 engage the stiff end ofthe receptacle to move the receptacle outwardly during the initialmovement of the cover to the position shown in Fig. 1. During furthermovement of the cover to the fully open position shown in Fig. 2, theshoulders 80b slide off the lower edge of the end Ill, leaving thereceptacle H9 in the position shown in Fig. 2. The fingers 80 arepreferably carried by an internal cover plate 8| which also carries asealing gasket 82 surround ing the inlet tube 65 in such manner thatwhen the cover is closed the inlet tube will be sealed into engagementwith the front end III of the receptacle I ll).

When the cover is closed it will be understood that in such closingmovement the edges of the aperture of the internal plate 6! will camback the latch 48 against the tension of the spring 17 so that the latchwill be inserted through the opening of the plate and will be returnedby spring force to the latching position shown in Fig. 4 to secure thecover in closed position until actuation of the latch.

For enclosing the dust receiving receptacle H5 there i provided animpervious receptacle corn partment formed by an elongated casin 35which is substantially oblong in transverse section. As best shown inFig. 4, its open front end is mounted upon a rearwardly extending flange86 of the member F, while the rear end .isclosed by an end cap 81 towhich is secured an apertured vertical bracket 88 through which extendsthe vertical switch operating rod 189 to the upper end of which issecured the operating .knob 50, which protrudes through the aperture 51of the top T. .A spring 9l encircles the rod 89 and abuts against a .pin92 thereon so .as to lightly urge the rod downwardly against the button1 M of an electric switch I l6. s

The casing 85 is provided at the lower righthand corner, as viewed inFig. .6, and adjacent the front thereof with an air discharge tube J95through which air is directed to the motor fan unit hereinafterdescribed. .A flexible coupling 96 is interposed in the tube 95 so as topreclude the transmissionof vibration from the motorfan unit to thecasing. The top external surface of the casing 85 is provided withhandle brackets 98 to which are .pivotally mounted links 99 which inturn pivotally engage the handle 58, which is normally retainedbygravlity, within the aperture 52 of the top T, but may be raisedtherefrom to permit grasping of the handle for bodily carrying thedevice.

Mounted within the casing 85 there is pro vided a perforated inner linerI00 which conforms in general configuration to that of the casing 85 andis provided at its opened front end with an outwardly extending flangewhich is seated within a rubber gasket lDl which in turn is mountedwithin the radial flange t' l of the member B, it being noted that thefront surface of the gasket is inwardly spaced from the front surface ofthe member F at this point so that the stiff front plate Ill of the dustreceptacle may be seated against 'the front face of the gasket llllwithin the confines of the surrounding ring 43 of the memberF.

The rear end of the liner It is closed by an impervious rigid end capHi2 which may .be permanently secured thereto as by welding or the like.For securing the casing 85 and the liner H10 in the assembled positionas shown in rigid relationship with the member there is provided a boltHi l which extends through the rear end cap 8'! of the casing 85 and therear end cap H12 of the liner 160. By drawing the caps together bytension applied by bolt ltd, the gasket 'Illl will be drawn tightlyagainst its seat on the flange Mof ring 43, while the casing 85 will inturn be thrust forwardly to secureit around the flange '86 and inabutment with the ring '43.

The dust receptacle itself is here disclosed as comprising a flexibleair p'ervious b'ody H'll which in transverse section conforms in shapeto the oblong transverse configuration of the liner Hill. While thematerial of the body may be of any pervious structure which will preventthe ipassage of dust and dirt, it is preferably formed of inexpensivedisposable material, such as paper. The front end of body .l I9 issecured to a stiff front plate I H which is preferably of inexpensivematerial, such as cardboard, and which is centrally apertured at H2 toreceive the inlet tube 65 of the cover C. The peripheral configurationand dimensions of the front plate I H are such that it will be snuglyreceived within the rin 43 of the member F-and will lie against thefront face of the gasket HH and be sealed thereagainst when the cover Cis closed. By this construction, in conjunction with the sealing gasket82 of the front cover, it will be seen that with -the cover closed, allof the air passing through the tube 65 is introduced into the pervious:b'od-y Hi), from which it flows through the pervious walls of the 6body :and through the perforated liner H10 and thence from. the casing.85 to the discharge tube 95. Inasmuch as this closed passageway doesnot include the outer casing T, the latter need not-be airtight.

.Inthe operation of the device it willbe understood that with the coveropened as shown in Big. 2 a'dust receptacle H 0 mayfbe'inserted into theliner H383, the front .plate I'H .of the receptacle being guided towardsseating within the member F by the platform '42 formed by the forwardextension of the member F. As the cover is moved to closing ,positionthrough the position shown in Fig. '1 and to the position shown in Fig.4, the tube 65 is introduced into the aperture N2 of the receptacle andon final inward movement the gasket 82 engages the front ,plate Hi toclamp the .latter in sealing engagement with the gasket 1.61 to completethe sealing securement of the receptacle. During such Jinward movementthe extractor fingers 8B are sprung out by engagement of the inclinedsurfaces a with the frontplate I ll so that the inner ends of tefingerspush past the plate and come to rest within the recesses 45 withthe shoulders 89b seated behind the plate "Hi. When the motor fan unitis energized to draw air therethrough, it produces a suction in thechamber 85 to cause an inflow of air through the inlet tube 65, andpassage of dust-laden air through the air .pervious body -l It willextract dust and dirt there-from which dust and 'dirt is retained withinthe receptacle .H'U. When the receptacle is sufficientlyloade'd withdirt whereby resistance to the flow of "air "th'erethrough is such as toreduce the de'sired cle'ariing efliciency the cover Cis released by-operation of th'e'l'atch 4'8 and is opened by pressure "from the spring12. The cover moves in the arcilate'path shown in Figs. '1 and 2 andinsuchmovem'e'nt'the inner ends 89b of the extracting fingers 88 which'areseated behind the plate I ll] draw the front plate 1 H and with it thebody "MD of the receptacle forwardly to the position shown :in Fig. lwhere it may be readily grasped to be further and fully withdrawn anddisposed of. Further movement of the cover to the position shown in Fig.2 will cause the inner ends 8% of the'eXtr'a-cting fingers 80 to slidefrom the bottom of theplate I'll and bereleased therefrom.

The motor fan unit, designated generally by reference character I 20comprises a motor housing I22 and a fanrhousing I24. An electricmotor iscontained within the housing I22, the shaft I26 of which motor projectsinto-the-fanhousing El 24 where it carries a conventional centrifugalfan'rotor. The air conduit communicates-with an opening :formed in anend cap i128 secured to the end of the motor housing bppos'ite from the'fan "housing. The fan housing is provided with an air discharge passage130 which communicates with the interior of the outlet box-30 by meansof ase'ction I32 of rubber tubing connected between passage [30 and*elbow [33 secured to the outlet box'in alignment with opening34therein. From here the air is discharged through the :opening 32 .in theoutlet box, the vanes '35 directing the air upwardly and away from thesurface supporting the cleaner. The rubber tubing I32 is interposedbetween the fan housing and the outlet box in order to preventtransmission :of vibration from the motor fan unit to the base .B.

The =motor fan unit .is supported 'on the bosses -24 and v2.5 of thebase B '?by means of a pair of brackets I34. As shown more particularlyin Figs. 4 and 5, blocks I36 of rubber or other suitable resilientmaterial are vulcanized to the brackets I34 and to plates I38 secured tothe sides of the motor housing I22. Straps I40 are also secured toplates I38 and extend outside the brackets I34, being normally spacedtherefrom, but located close enough thereto so that under shock thestraps will contact the brackets before the shear or tension forcesacting on the rubber become suflicient to damage it.

In order to open the front cover C automatically when the pressure dropthrough the receptacle III) has reached a predetermined value, a pair ofSylphon bellows I42 and I43 is mounted on a bracket I44 secured to theunderside of the bottom wall of chamber 85. The interior of bellows I42is in communication with the interior of chamber 85 through a hollowbolt I46. The interior of bellows I43 is in communication with theinterior of the receptacle IIO through a flexible rubber tube I48 whichextends from the bottom of the bellows I43, below the motor housing I22,through a suitable opening in the front casting F into the recess 4Ithereof, and thence through an opening in the lower wall of the cover Cto connect with an opening in the side of the inlet tube 65, theinterior of which tube is in direct communication with the interior ofthe receptacle I I0. The bellows I42 and I43 are arranged to actuatelimit switches I50 and I52, respectively. Switch I50 is normally open,that is when atmospheric pressure is applied to both the exterior andinterior of bellows I42. However, when the bellows is collapsed bysuflicient reduction of the interior pressure, switch I50 is closed.Switch I52, on the other hand, is closed when both sides of bellows I43are subjected to atmospheric pressure, and is opened by collapse of thebellows resulting from sufiicient reduction of the interior pressure.

The switches I50 and I52 are connected in series with a solenoid I64which is likewise mounted on the underside of the bottom wall ofcompartment 85. This solenoid includes an armature I66 to which isconnected the rod 18 by means of a pin. A spring I bears against awasher I12 on the armature I66, thus tending to move the armature andconnected parts to the left, as viewed in Fig. 4. Connected to the leftend of the armature is a rod I16 Which terminates in a button I18projecting through the opening 50 in the rear end of the casting T. Inthe neighborhood of switch I I6 the rod I16 is divided into two brancheswhich extend on opposite sides of the switch, as is shown in Fig. 5.

Switch II6 is of the usual snap toggle type provided with the actuatingbutton H4. The toggle pin I80 of the switch is extended through the sidewalls of the switch housing and the projecting ends of the pin arereceived in slots I94 formed in the two branches of rod I16, as shown inFigs. 4 and 5.

The switch thus may be actuated in two different manners. First,depression of the switch button I I4 by means of the knob 90 and rod 89serves to operate the switch in well known manner. When the switch isactuated in this manner the pin I80 may travel through the slots I94without moving the rod I16. The second way in which the switch may beoperated is by lengthwise movement of the rod I16, caused either by thesolenoid I64 or manual depression of the button I18. Such movement ofthe rod I16 to the right, as viewed in Fig. 4, moves the pin I80 in thesame direction and the switch is so constructed that 8 movement of thepin in this direction opens the switch.

Switch I I6 is connected in the motor circuit in the usual manner so asto start and stop the motor. Switch I I6 also is in series with thelimit switches I42 and I43 and th solenoid I69 so that the solenoid isdeenergized whenever switch H6 is open, regardless of the condition ofthe limit switches I50 and I52.

The automatic controls operate in the following manner. It is assumedthat the switch II6 has been manually thrown by means of the knob 90 tothe closed position so that the motor is operating to draw air into thereceptacle IIO. When there is little or no dirt within the receptacle,the pressure drop through the porous walls thereof is at a minimum andconsequently, the

, suction outside the receptacle I I 0, which acts on the interior ofbellows I42 is but a slight amount greater than the suction within thereceptacle which acts on the interior of bellows I43. Under theseconditions both the bellows I42 and I43 will be partially collapsed, andthe construction and arrangements of the parts are such that the bellowsI43 will be collapsed sufficiently to open the circuit through theswitch I52. Bellows I42 may or may not be collapsed sufficiently toclose the circuit through switch I50, but this is immaterial inasmuch asthe two switches are in series and hence the fact that switch I52 isopen assures that the solenoid I64 is not energized. Consequently, thespring I10 holds the armature I66 in the position shown in Fig. 4 andspring 11 is able to hold the latch 48 in engagement with the frontcover C so as to hold the latter in closed position. As more and moredirt is collected within the receptacle I I0, the pressure drop throughthe porous walls of the receptacle I I0 increases so that the absolutepressure within the bellows I42 decreases, while that within the bellowsI43 increases. This causes the bellows I42 to collapse further until thecircuit through the switch I50 is closed. The increase in absolutepressure within the bellows I 43 causes this member to expand until thecircuit through switch I52 is closed. When both of these switches areclosed the circuit is completed to the solenoid I64, and theenergization thereof moves the armature I66 and the rods 18 and I16connected therewith to the right. This movement of rod 18 pivots thelatch 48 against the bias of spring 11 so as to release the front coverC, whereupon the spring 12 associated with the hinge 10 tends to pivotthe arm 61 in a direction to open the cover. However, the suctionexisting within the compartment 85 and acting on the sealing gasket 82tends to hold the cover closed and consequently the latter does notimmediately open all the way. Movement of rod I16 by the armature of thesolenoid causes pin I of switch I I6 to be moved to the right, thusthrowing the switch to the off position. This shuts off the power to themotor, thus causing the fan to slow down and hence the suction withinthe chamber 85 is reduced and the cover is opened by the force ofspring" aided by gravity.

Opening of switch II6 also opens the solenoid circuit so that thearmature I66 is returned to its left-hand position by the spring I10.The consequent movement of rod I16 does not, however, move the pin I80so as to close the switch I I6, inasmuch as the length of slot I94 is atleast as great as the throw of the pin I80. Movement of rod 18 to theleft enables the spring 11 to pivot the latch 48 to latching position,but by this time the cover has been opened be free of thelatch.

As the cover opens, the'abrup't surfaces 80b on the extractor fingersB'Oengage the rear face of the stiff plate H'l of the receptacle llil,thus drawing the receptacl out of the compartment 85 to the positionshown in Fig. 1'. As was previously described, upon further movement of"the cover C, the extractor fingers -80 slip off the lower end of theplateH l, leaving the receptacle I-l-il in the position shown in Fig. 2,while the :CQVBI' opens all the way to the position" likewise shown inthis figure. Y

The operator may now withdraw the receptacle H from the compartment 85and replace it by a new receptacle. The cover "C is thereupon closed bylifting it and pushing it rearwardly until it is engaged by the latch48. Due to the slot 19 in the rod 13, the latch may be pivotedsufiiciently to engage the front cover without having to move the rod 18and the parts connected thereto. The motor may again be started bydepressing the knob 90 so as to close the switch. During this movementthe pin I80 merely travels through the slot I94 without having to movethe rod 1 16.

If for any reason it is desired to remove the receptacle I I0 before theautomatic controls open the front cover, this may be done by pressingthe button I18 inwardly. This has exactly the same effect as though thearmature I66 were moved to the right by energization of the solenoidI64, and hence it is not necessary to repeat the description of theoperation of the various parts.

While there has been shown one more or less specific embodiment of theinvention, it is to be understood that this has been done for thepurpose of illustration only, and that the scope of the invention is notto be limited thereby, but is to be determined from the appended claims.

What I claim is:

1. In a vacuum cleaner, a housing enclosing a dust receptaclecompartment, an opening in said compartment in a substantially verticalplane, a dust receptacle insertable into and removable from saidopening, a closure member for said opening, and means including an armsecured to said closure member and adapted to en age the dust receptacleand to move the dust receptacle through said opening upon opening saidclosure member.

2. In a vacuum cleaner, a housing enclosing a dust receptaclecompartment, an opening in said compartment in a substantially verticalplane, a dust receptacle having a rigid end plate insertable into andremovable from said opening, a closure member for said opening, andmeans including a resilient arm secured to said closure member having ahooked end positioned to snap behind said plate upon closure of saidclosure member and to withdraw said dust receptacle outwardly throughsaid opening upon opening of said closure member.

3. In a vacuum cleaner, a housing enclosing a dust receptaclecompartment, an opening in said compartment in a substantially verticalplane, a dust receptacle having a rigid end plate insertable into andremovable from said opening, a closure member for said opening, meansfor movably securing said closure member to said housing includingparallel linkage for maintaining said closure member parallel to itselfduring opening and closing thereof, and a pair of resilient arms securedto said closure member and extending into said compartment when saidsufliciently so as to a s-mos 10 member is closed, said arms'havinghooked ends positioned to snap behind said plate'upon closure of saidmember and to engage said plate upon opening of said member to withdrawsaid dust receptacle outwardly through said opening.

4. In a vacuum cleaner, a housing enclosing a dust receptaclecompartment, an opening in said compartment in a substantially verticalplane, adust receptacle having a rigid end plate insertable into andremovable from said opening, a closure member for said opening, meansfor movably securing said closure member to said housing includingparallel linkage for guiding said member parallel to itself in anarcuate downward path from closed position to an open position in whichthe top of said member is below the bottom. of said opening, and a pairof resilient arms secured to" said member and" ex: tending into saidcompartment when said member is closed, said arms having hooked endspositioned to snap behind said plate upon closure of said member and toengage said plate to withdraw said dust receptacle outwardly throughsaid opening during the first portion of the downward opening movementof said member and to thereafter be disengaged from said plate by thecontinued downward movement of said member.

5. In a vacuum cleaner, a housing having a dust receptacle compartmenttherein with an opening to the exterior, a dust receptacle insertableinto and removable from said opening with an inlet located atsubstantially said opening, a hose coupling member having a conduitadapted to communicate with said inlet and having a pivotal mounting onsaid casing, and an arm on said member having a lost motion connectionto said receptacle whereby upon withdrawal movement of said membercommunication with said inlet is first broken and thereafter said arm iseffective to draw the dust receptacle outwardly.

6. In a vacuum cleaner, a horizontal housing having a dust receptaclecompartment therein with an end opening to the atmosphere, a dustreceptacle insertable into and removable from said compartment throughsaid opening, a movable member associated with said compartment end,hose coupling means carried by said member for connecting one end of asuction hose thereto, and parallel linkage means interconnecting saidhousing and said member for movably supporting said member with respectto said housing so that said member and said hose coupling means movetogether through an arc from a first position adjacent said openingwhere the axis of said coupling means is horizontal to a second positionremote from said opening where the axis of said coupling means is alsohorizontal.

'7. In a, vacuum cleaner, a horizontal housing having a dust receptaclecompartment therein with an opening to the atmosphere, a dust receptacleinsertable into and removable from said compartment through saidopening, a movable end member for said housing adjacent the openingtherein, hose coupling means carried by said member for connecting oneend of a suction hose thereto, parallel linkage means interconnectingsaid housing and said member for movably supporting said member withrespect to said housing so that said member and said hose coupling meansmove together through an are from a first position adjacent said openingwhere the axis of said coupling means is horizontal to a second positionremote from said opening where the ll axis of said coupling means isalso horizontal, spring means for operating said linkage means to movesaid hose coupling means from said first to said second position,releasable means for holding said member and said hose coupling means inthe first of said positions, and means for releasing said releasablemeans whereby said spring means operates said linkage means to move saidhose coupling means and the end of the hose attached thereto to saidsecond position away from said opening.

- ROBERT C. LAMPE.

References Cited in the file of this patent UNITED STATES PATENTS NumberD. 149,664

Number 15 Number Name Date Templin May 3, 1910 Kelsey Dec. 13, 1910Saylor Apr. 15, 1913 Allen Jan. 12, 1915 Engberg et al Feb. 10, 1931Bieth Dec. 10, 1935 Muentener Feb. 16, 1937 Salt Jan. 16, 1945 Nufier etal. Nov. 6, 1945 Nufier et al Apr. 6, 1948 Snyder Jan. 4, 1949 FOREIGNPATENTS Country Date Germany Dec. 11, 1937

